James l



(No Model.)

J. L. MQMIGHAEL. METHOD OF AND APPARATUS FOR COOLING FURNACE BOSH JACKETS.

No. 349,513. A Patented Sept. 21, 1886.

N PETE: 3 PhowLilhn m her, Washlllglun. D C.

Umrnn STATES PATENT OFFICE.

JAMES L. MOMICHAEL, OF GLEN \VILTON, VIRGINIA.

METHOD OF AND APPARATUS FOR COOLING FURNACE BOSH-JA'CKETS.

SPECIFICATION forming part of Letters Patent N0. 349,513, dated September 21, I886.

Application filed April 30, 1886. Serial Nov 200,742. (No model.)

To all whom, it may concern:

Be it known that I, J AMES L. MOMICHAEL, of Glen XVilton, in the county of Botetourt and State of Virginia, have invented a new and useful Improvement in Method of and Apparatus for Cooling Furnace Bosh-Jackets, of which the following is a specification.

Myinvention consists in an improved method of and apparatus for applying, controlling, and carrying off the water used in cooling the boshjackets of blast-furnaces, aswill be hereinafter fully described, and pointed outin the claims.

Referring to the accompanying drawings, Figure 1 is a side elevation, partly in section, of a bosh-jacket of ordinaryconstruction, to which my improved apparatus is shown as applied in its operative position. Fig. 2 is a perspective view of a portion of the same, showing the sectional spray-pipes adjusted in various positions; and Fig. 3 is a sectional View taken on linezrw, Fig. l of the drawings.

The same letters of reference indicate corresponding parts in all the figures.

Referring to the several parts by letter, A represents the bosh-jacket, which is of ordinary construction, and for which I make no claim per 86. Around this jacket are secured the troughs B, of which any desired number may be employed, according to the number of circular water-pipes which are used; for, although I have shown in the accompanying drawings three circular pipes and three troughs, it is obvious that I do not confine myself to this particular number. These troughs are arranged, as shown, at asuitable distance below the respective circular water-pipes, and serve to receive the water which runs down from the sectional spray-pipes above them, the troughs gradually increasingin size as they descend, and each of the upper troughs having a discharge-pipe, G, which conveys the water received in the trough down into the trough next below, while the lowermost trough, which is also the largest of the series, to adapt it to receive not only the water from the troughs above,but also all waste-water from the furnace proper, is also provided with a discharge-pipe, E, which conveys the water from this trough.

F G H indicate the circular water-pipes, which supply water to the adjustable sectional spray-pipes, the uppermost circular pipe, F,

being supported at the upper end of the boshjacket, while the two remaining pipes, G H, are preferably supported by books I on the lower outeredge of the two uppermost troughs, B, as shown, so that the hang a little below the level of the bottom of the troughs.

J J J indicate the sectional spray-pipes, which may be made of any desired length,and which have their ends close and their sides, which are facing the bosh-jackct', formed with the spray-apertures J through which the waterissues against thejacket, and these sectional spray-pipes are adj ustably connected to the circular water-pipes F G H by the swinging or movable branch pipes K, which connect to .the water-pipes and the spray-pipes by the ordinary ball-and-socket joints,L, which, as will be readily seen, will permit of the sectional spray-pipes J being moved so as to cover every point of the outer surface of the bosh-jacket, the flow of water into each branch pipe from the water-pipes being controlled by a stopcock, M, so that the water can be cut off from any one or more of the spray-pipes, or from all of them, as may be desired.

It will be seen that by my improved method and apparatus water may be applied to any square foot of the bosh-jaoket, or to the whole surface of the bosh-jacket, so that any desired part of the said jacket or the whole thereof may be cooled, as required; or the water may be entirely out off from the bosh-jacket, the water applied being by my improved apparatus under perfect control. It will be further seen that no water can get into the interior of the furnace, and that myvimproved apparatus can be applied to any furnace, new or old, already having a bosh-jacket.

In Fig. 2 of the drawings I have shown in dotted lines the sectional spray-pipes adjusted in various positions, in order to show the ease with which the spray of water can be applied to any portion of the surface of the bosh-j acket.

In the practical manufacture of my improved apparatus it may be found desirable to make various minor changes in the construction and arrangement of details, and I would therefore have it understood that I do not limit myself to the precise construction and arrangement of parts herein shown and described, but reserve to myself the privilege of making such changes and modifications as may be resorted to without departing from the spirit of my invention. l

I am aware that the entire outer bosh of a furnace has been surrounded by a continuous series of circular troughs having water-pipes, so that said bosh would be cooled by water contained in the troughs; but it has been found that the water heats very rapidly, as its flow is interrupted and the outer air can only act on a small surface of the water to cool it. In my construction the water sprayed against the bosh from the series of perforated tubes flows rapidly down the sides of the same to the several troughs, which, being arranged some distance apart, allows the currents of air to act on the water and keep it cool. It is also old to form cooling-boxes around the tuycrcopeir ings and cool the same by water supplied from perforated pipes, and I do not claim the same as my invention. The latter means could not well be applied to the entire bosh without forming the bosh entirely of such boxes.

Having thus described my invention, what I claim, and desire to secure by Letters Pat- .ent, is-

1. The combination, with the water-bosh, of circular water-pipes having in ward-cxten ding pipes provided with segmental spray-tubes concentric with the outer face of the bosh and extending entirely around the same, and a circular trough secured to the bosh some distance below each series of spray-tubes, whereby the water sprayed on the bosh will be free to run rapidly down the same,and be exposed to the action of the outer air,substantiall y as setforth.

2. The combination, with the water-bosh, of circular water-pipes having inward-extending pipes formed in sections connected by universal joints, and having segmental spray-tubes on their inner ends concentric with the outer surface of the bosh and vertically adjustable by means of said universal joints, and a circular trough on the bosh some distance below each series of spray-tubes, whereby any one or an entire series of spray-tubes may be adjusted to any part of the bosh within its or their limit of adjustment, substantially as set forth.

3. The combination, with the water-bosh and the series of circular troughs B B, having outlet-pipes, the upper troughs having hooks I I depending therefrom, of the circular pipes F G H, the pipes G H resting in the said hooks, a series of adjustable pipes, K, having universal joints L, and the spray-pipes J on the inner ends of said pipes K, concentric with the outer surface of the bosh, substantially as set forth.

' JAMES L. lWOlYIIOHAEL.

' Witnesses:

T. D. KAUFFERT, D, S. Goon. 

